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MHT CET Physics question

PhysicsThermal Properties of MatterMHT CET

A wall has two layers A and B, made of two different materials. The thermal conductivity of material A is twice that of B. If the two layers have same thickness and under thermal equilibrium, the temperature difference across the wall is , the temperature difference across layer B is

Answer: (B)

Solution

The same heat current flows through both layers: with , so and T_A$+Δ

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Question ID VK-065927